Features of RexVa DC heating element
The heating structure of the carbon heating element consists of a carbon filler with excellent electrical conductivity. It has an excellent effect of raising the body temperature as the vibration of water in the body becomes active even in the slightest change of environment. In addition, the carbon heating element emits eco-friendly far infrared rays and negative ions during heating.
The important feature of far-infrared rays is that they have a strong thermal action and penetrating power. Therefore they have the function of delivering a warm feeling like sunlight to our skin.
Far-infrared radiation refers to thermal energy with a wavelength of 3.6 to 16 microns. This thermal energy penetrates up to 40mm into the skin and it is a beneficial beam that expands the capillaries of the human body through the body's thermal action, facilitates blood circulation, and helps to circulate substances in the body.
As a result of our far-infrared test with our planar heating element, when the ideal black body was set as 1, the far-infrared emissivity of RexVar's planar heating element was measured to be 90.3%, indicating a higher level of far-infrared effect than competitors.
When the carbon heating element using radiant heat is 220W based on 1㎡ the heating temperature is 40~45 ℃. Unlike floor heating and wall heating, where the heating temperature differs depending on the ambient temperature, the low-voltage DC heating element is mainly used for portable use and has heating effect 4~5℃ higher than general heating film. Since special industrial heating elements are sensitive to the surrounding environment, the amount of heat generated may vary depending on the usage environment, for example for preventing electric vehicle battery discharge in winter or for melting snow in hot water pipes.
Low-voltage DC heating element uses radiant heat. Rather than heating the entire area, the interval can be widened according to the purpose of use, or the amount of heat can be maximized by narrowing the area.
Advantages of RexVa DC heating element
Customized temperature implementation is possible
RexVa can set the heating temperature of the low-voltage DC heating element according to the purpose of use.
From general portable DC heating elements to industrial low voltage applications. We check whether the desired temperature by consumers is safe. And then we find the most appropriate temperature.
(Consultation is required for customized temperature & environment.)
It can produce a heating value that matches the capacity of the battery
One of the important part of a low voltage DC heating element is the battery. To make a safe product, you need to understand the capacity and current of the battery in order to configure the heating element. If this is neglected, the battery itself may overheat and the efficiency might decrease. Therefore it might be difficult to achieve uniform heat generation. Through years of experience RexVa has created a technology that can maximize the efficiency of low-voltage DC heating elements, adapters and batteries. RexVa set up production of the heating elements that consumers want.
A variety of low-voltage products from 5 to 24V can be produced
DC heating elements, which are resistors, have a deep relationship with voltage according to Joule's law.
The lower the voltage, the more difficult it is to develop a high-heat heating element.
If an accurate design pattern is not implemented, heat cannot be generated in the resistor and there is a problem that heat is generated in the energized line. RexVa accurately calculates and presents the amount of heat generated by voltage.
(bellow 5V/ above 24V consultation is required)
We can produce any size and thickness which is requested
There are many different varieties of ways to use DC products from RexVa.
For example for wrist heating bands width 100mm to 700mm under heating yoga mats, 1000mm heating sheets used for bed sheets, and thermal vests for wetsuits.
In addition, it is possible to change the thickness and material.
(Other specifications can be developed through consultation.)
Mass production and uniform heating element production is possible
RexVa is using the patened developed gravure printing equipment for the planar heating element. Even if hundreds of thousands of meters are produced by printing, a product with little resistance value change can be produced, providing a uniform product to consumers. 2 domestic patents related to printing equipment. To prevent infringement of patent rights for equipment developed through government technology development projects, we are using the government technology deposit system, which guarantees patented technology.
Low voltage PTC heating element can be developed
The PTC function in general heating film is to delay overheating by increasing the resistance in case of local overheating. But the PTC function of low voltage has a function to reduce the current value during heat generation so that the adapter can be safely used.
It is mainly specialized in portable heating elements. It is a technology that only RexVa can develop in the heating film market.
(Separate consultation required)
The reason to use RexVa Low Voltage DC Heating Elements
| Normal product | Defective product |
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Low voltage DC heating element. The current flow passes through the silver pattern and moves to the carbon resistor to generate heat. If the pattern designed incorrectly the carbon surface does not generate heat, and overheating occurs in the silver pattern, making it impossible to function as a normal heating element.
When designing a low-voltage DC heating element, Rexbar considers the following.
. Correlation between voltage and current, Maximum heating efficiency according to battery or adapter capacity, Heating area according to the product to be developed, Prediction of temperature rise according to finishing materials, Calculation of heating value according to voltage drop
The conditions for developing a safe and high quality heating element must be established.
Products that can be implemented based on low-voltage DC heating element
| Product | voltage range | Usage |
| portable heating element | Above 5[V] | heating vest pad portable heating stove wrist heat protector |
| medical & beauty equipment | Above 5[V] | medical heating belt heating bandage for eyes beauty equipment heating element for bidet |
| bed and heating equipment | Above 12[V] | heating bed sheet heat blanket heat cushion |
| camping equipment | Above 5[V] | for warming the inside of the caravan fishing chair Other camping equipment |
| other industrial equipment | for low voltage | for preventing electric motorcycle battery discharge electric car battery protection for hot water pipe protection for snowmelting other industrial equipment |
※ Other contents for development can be discussed through consultation
